SQL aggregate function

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• Aggregate function — In computer science, an aggregate function is a function that computes a single result value from a collection of input values such as a set, a bag or a list.Common aggregate functions include:* Average() * Count() * Maximum() * Minimum() *… …   Wikipedia

• Aggregate — may refer to: * Aggregate (composite), in materials science, a component of a composite material used to resist compressive stress * Construction aggregate, materials used in construction, including sand, gravel, crushed stone, slag, or recycled… …   Wikipedia

• SQL CLR — or SQLCLR (SQL Common Language Runtime) is technology for hosting of the Microsoft .NET common language runtime engine within SQL Server. The SQLCLR allows managed code to be hosted by, and run in, the Microsoft SQL Server environment.This… …   Wikipedia

• Null (SQL) — The Greek lowercase omega (ω) character is used to represent Null in database theory. Null is a special marker used in Structured Query Language (SQL) to indicate that a data value does not exist in the database. Introduced by the creator of the… …   Wikipedia

• Join (SQL) — An SQL join clause combines records from two or more tables in a database.[1] It creates a set that can be saved as a table or used as is. A JOIN is a means for combining fields from two tables by using values common to each. ANSI standard SQL… …   Wikipedia

• Select (SQL) — A SQL SELECT statement returns a result set of records from one or more tables. [cite web |url=http://msdn2.microsoft.com/en us/library/ms189499.aspx |title=Transact SQL Syntax Conventions |accessdate= |author=Microsoft ] [cite web… …   Wikipedia

• Group by (SQL) — A GROUP BY statement in SQL specifies that a SQL SELECT statement returns a list that is grouped by one or more columns, usually in order to apply some sort of aggregate function to certain columns. Examples: Returns a list of Department IDs… …   Wikipedia

• DbForge SQL Complete — Developer(s) Devart Stable release 3.00 / 07/14/2011 Development status Active Written in C# …   Wikipedia

• ERROL — (an acronym for Entity Relationship Role Oriented Language) is a declarative database query and manipulation language for the Entity relationship model (ERM). It is applicable to any data model on which ERM can be mapped, virtually any general… …   Wikipedia

• MultiDimensional eXpressions — (MDX) is a query language for OLAP databases, much like SQL is a query language for relational databases. It is also a calculation language, with syntax similar to spreadsheet formulas. Contents 1 Background 2 History 2.1 mdXML …   Wikipedia

• Pointer (computing) — This article is about the programming data type. For the input interface (for example a computer mouse), see Pointing device. Pointer a pointing to the memory address associated with variable b. Note that in this particular diagram, the computing …   Wikipedia